July 2007 MS-SVN015-EN

Installation Manual

NEW STYLUS TM

Split System, 1-5 TonsConvertible TypeMCX Series 50/60 Hz

50 Hz ModelsCooling OnlyMCX 512 GBMCX 518 GBMCX 524 GBMCX 530 GBMCX 536 GBMCX 042 GBMCX 048 GBMCX 060 GB

60 Hz ModelsCooling OnlyMCX 512 G1MCX 518 G1MCX 524 G1MCX 530 G1MCX 536 G1MCX 042 G1MCX 048 G1MCX 060 G1

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MS-SVN015-EN© American Standard Inc. 2005

General Information

General InformationThis Installation Manual is given asa guide to good practice in theinstallation by the installer of MCXmini-split system. Installationprocedures should be performed inthe sequence that they appear in thismanual.

For installing the unit to operateproperly and reliably, it must beinstalled in accordance with theseinstructions. Also, the services of aqualified service technician shouldbe employed, through themaintenance contract with areputable service company.

Read these Installation Instructionscompletely before installing the airconditioning system.

About this ManualCautions appear at appropriateplaces in this Instruction Manual.Your personal safety and the properoperation of this machine requirethat you follow them carefully.The Trane Company assumes noliability for installations or servicingperformed by unqualified personnel.All phases of the installation of thisair conditioning system mustconform to all national, provincial,state and local codes.

About the UnitThese MCX units are assembled,pressure tested, dehydrated,charged and run tested beforeshipment. The information containedin this manual applies to MCX unitsare designed to operate in coolingmode only and in cooling or heatingmodes.

Trane MCX series of mini-splitsystems offer three styles ofinstallation: floor, low wall and underceiling with both LCD wirelessremote control or wired control.Trane MCX series provide flexibilityand savings.Note: For model MCX 042, MCX 048and MCX 060, there are only twostyles of installation: under ceilingand low wall.

ReceptionOn arrival, inspect the unit beforesigning the delivery note. Specify anydamage of the unit on the deliverynote, and send a registered letter ofprotest to the last carrier of thegoods within 72 hours of delivery.Notify the dealer at the same time.

The unit should be totally inspectedwithin 7 days of delivery. If anyconcealed damage is discovered,send a registered letter of protest tothe carrier within 7 days of deliveryand notify the dealer.

WarningWarnings are provided atappropriate places in this manual toindicate to installers, operators andservice personnel of potentiallyhazardous situations which, if notavoided, COULD result in death orserious injury.

CautionCautions are provided at appropriateplaces in this manual to indicate toinstallers, operators, and servicepersonnel of potentially hazardoussituations which, if not avoided, MAYresult in minor or moderate injury ormalfunction of the unit.

WarrantyWarranty is based on the generalterms and conditions by country. Thewarranty is void if the equipment ismodified or repaired without thewritten approval of The TraneCompany, if the operating limits areexceeded or if the control system orthe electrical wiring is modified.

Damage due to inappropriateinstallation, lack of knowledge orfailure to comply with themanufacturer’s instructions, is notcovered by the warranty obligation.If the installation does not conformto the rules described in InstallationManual, it may entail cancellation ofwarranty and liabilities by The TraneCompany.

ImportantThis document is customer propertyand is to remain with unit. Pleaseplace in service information packupon completion of work. Theseinstructions do not cover allvariations in systems, nor do theyprovide for every possiblecontingency to be met in connectionwith installation. Should furtherinformation be desired or shouldparticular problems arise which arenot covered sufficiently in thismanual, the matter should bereferred to your authorized Tranedealer.

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Contents

General Information 2Typical Installation 4Location and Preparation of Units 5Unit Installation 6Connection of Refrigerant Tubing 7Condensate Drain Piping 9Electrical Installation 10Remote Control Installation 11Typical Wiring Diagram 12Dimensional Data 16Notes 18

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Typical Installation

Note: For models MCX 042, MCX 048, MCX 060there are only two styles of installation: under ceiling and low wall

Ceilingmounted

Outdoor unit

Indoor unit

Floor mounted

Return air grille contains air filter

Refrigerant tubing/wiring

Drain

Return air grillecontains air filter

Supply air grilleAdjustable louvers direct air

Supply air grilleAdjustable louvers direct air

Low wall mounted

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Location and Preparation of Units

1. Select an appropriate positionthat allows every corners of theroom to be uniformly airconditioned and where it is easyto route the refrigerant tubing.

2. Ensure that the floor or ceilingconstruction is sufficient to fullysupport the weight of the indoorunit.

3. Consideration must be given toassure an unobstructed flow ofsupply and return air.

4. Refrigerant tubes betweenindoor and outdoor units shouldbe as short as possible.

5. Length of the condensate drainhose should be kept as short aspossible (Figure 1).

6. Recommended serviceclearance as shown in figure2, 3 and 4.

7. Do not install unit in directsunlight or near other heatsources as this may affectperformance. Do not allowoutside air to directly enter unitor condensate may form at theunit’s discharge.

Note: For MCX042-MCX060 theunit should be installed over the floorat least 20 cm.

Figure 4

Figure 3

Figure 2

Maintenance area(Celling mounted) Min.30 cm.

Min.20 cm.

Min.20 cm.

Min.

30 cm.

Min.

20 cm. Maintenance area

(Floor m

ounted)

Figure 1

Min. 120 cm.

Min.

30 cm.

Min.

20 cm.

Min.20 cm.

Maintenance area

(Low wall m

ounted)

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0.83"(21)

0.83"(21)

8.5"(215)

B

A

Unit Installation

Indoor Unit

1. Select a location to route tubing,wiring and drain pipe betweenthe indoor and outdoor units.

2. Make a hole in the wall using akey hole saw or hole-cutting drillattachment.The hole should be made at aslight downward slant to theoutdoor side (Figure 5).

Before cutting, check that no pipesor studs are directly behind theplace to be cut. Avoid areas whereelectrical wiring or conduits arelocated.

3. Place the unit on a solid and levelfoundation.

4. Tubing, wiring through and drainpipe of low wall and floormounted units can be routed,rear or right side of unit whenfacing front.Ceiling mounted can be routedstraight downward.

5. Pull air filters upward (Figure 6).

Figure 5

6. Unscrew at the return grille(Figure 7).

7. Unscrew at the grille bottomhinges, pull out the screw, andunscrew at the side panel front(Figure 8). Then, push down onthe side panel front and pull up(Figure 9).

Note: = A 0.49" x 1.575" - 4 SLOT(Mounting hole) (12.5 mm 40.0 mm)

Unit Size B

MCX 512-518 36.2" (920)MCX 524 46.1" (1,170)MCX 530-536 55.9" (1,420)MCX 042-048 65.7" (1,670)MCX 060 75.6" (1,920)

8. Place or hang the unit at theselected position.

9. Replace both right and left sidepanels, and the return grille afterthe installation of wiring, tubingand piping is complete.

Outdoor Unit

See the proper installation methodprovided in the Installation Manualfor the outdoor unit.

Indoor side

Figure 6

Pull

Pull

Figure 7

Figure 8

Figure 9

Outdoor side Figure 10

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Connection of Refrigerant Tubing

The indoor unit refrigerant lineconnections are flared both 50 Hzand 60 Hz. Installation brazing, leaktesting, and evacuation of refrigerantlines are covered in the InstallerManual, packaged with the outdoorunit. Read the instructions beforeinstalling the refrigerant lines.

The indoor unit refrigerant pipingconnections are located on the righthand side when facing the unit(Figure 11).

Connecting the unit with flaringprocedure.(Only for MCX 512-536)

1. Flaring (If piping is procured orcut at the site). Cut the coppertube to the required length witha tube cutter. It is recommendedto cut approx. 30-50 cm. longerthan the tubing length youestimate.

2. Hold each pipe downward whencutting and remove burrs at theend of the copper tube with atube reamer or file. This processis important and should be donecarefully to make a good flare(Figure 12 and Figure 13).

Figure 11

Check if (L) is flared uniformand is not cracked or scratched.L Dimension:

1.4 to 1.7 mm (6.35 mm dia)1.8 to 2.0 mm (9.53 mm dia)1.9 to 2.2 mm (12.7 mm dia)2.1 to 2.4 mm (15.88 mm dia)

When reaming, hold the tube enddownward and be sure that nocopper scraps fall into the tube.

3. Remove the flare nut from theunit and be sure to mount it onthe copper tube.

4. Make a flare at the end of coppertube with a flare tool (Figure14, 15).

Coppertubing

Reamer

Figure 12

Before After

Deburring

Figure 13

Flare tool

Flare nut

Coppertubing

Figure 14

L

Figure 15

A good flare should have thefollowing characteristics:

- Inside surface is glossy andsmooth.

- Edge is smooth.- Tapered sides are of uniform

length.

Bending

5. When bending the tube, becareful not to crush it. To preventcrushing of the tube, bend itgently and do not bend the tubeat a radius curvature of less than100 mm.

6. If the copper tube is bent orpulled too often, it will becomestiff. Do not bend the pipe morethan three times at one place.

Cautions beforeconnecting tubes tightly

7. Be sure to apply a sealing cap orwater-proof tape to prevent dustor water from getting into thetubes before they are used.

8. Be sure to apply refrigerantlubricant to the matchingsurfaces of the flare and unionbefore connecting themtogether. This is effective forreducing gas leaks (Figure 16).

Apply refrigerantlubricant here

Figure 16

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Connection

9. For proper connection, align theunion tube and flare tube straightwith each other, then screw in theflare nut lightly at first to obtain asmooth match (Figure 17).

10. Tighten the flare nut to thespecified tightening torque withtorque wrench and adjustablewrench (Figure 18).

Flare Nut Tightening TorqueFlare Nut/Piping Size Tightening Torque

kgf, - cm lbf-in

6.35 mm (1/4") dia. 150~200 130~170

9.53 mm (3/8") dia. 350~400 300~340

12.7 mm (1/2") dia. 500~550 430~470

15.88 mm (5/8") dia. 600~650 520~570

11. Repeat the process above for theremaining line.

Connecting the unit withbrazing procedure(Only for MCX 042-060)

1. Cut the copper tube to therequired length with a tube cutter.It is recommended to cut approx.20-30 cm. longer than the tubelength you estimate.

2. Remove burrs at the end of thecopper tube with a tube reamer(Figure 12).

3. There are 2 ways to connect thecopper tube- Use a coupling between the

copper tube of indoor unit andthe copper tube used forinstallation (Figure 19).

- Expand the copper tube byusing a swaging tool set as inFigure 20.

4. Clean internal and external surfacesof coupling or expanded tube priorto brazing.

Figure 17

Figure 18Figure 20

Figure 19

5. Insulate the entire gas line.6. Do not allow uninsulated liquid

line to come in direct contactwith bare gas line.

7. Precautions should be taken toavoid heat damage to thepressure tap valve core duringbrazing. It is recommended thata wet rag be wrapped around thevalve body.

8. It is recommended to use brazeshield, soak pad in water andplace over suction and liquidlines to protect unit finish.

9. To braze the copper tube, beforebrazing a copper tube to a soldercoupling or a copper tube to anexpanded tube, do not forget tokeep them tight as shown inFigure 21, 22.

10. Use a dry nitrogen purge andbrazing alloy without flux whenbrazing the field line to thecopper factory connection. Flowdry nitrogen into either valvepressure tap port, through thetubing and out the other portwhile brazing.

11. Braze using accepted goodbrazing techniques.

Copper tube ofoutdoor unit

Solder coupling

Swagingtool

Coppertube

Tube holder(Clamp)

Union Flare nut

Soldercoupling

COMMET 3

Figure 21

Torch

Copper tubefrom indoorunit

Solder rod

Copper tube fromoutdoor unit

Soldercoupling

COMMET 3

Figure 22

Torch

Copper tubefrom indoorunit

Solder rod

Copper tube fromoutdoor unit

Copper tubeof indoor unit

Indoor unitpipe

Wrench(adjustable)

Torquewrench

Flare nutConnection pipe

Connection of Refrigerant Tubing

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Condensate Drain Piping

- The drain hose should runstraight down the wall to alevel where the runoff will notstain the wall.

- There should be no traps.Avoid putting the end of thehose in water.

- To conveniently drain thesystem, the drain hose mustslant downward, with a slopeof at least 1 : 50 to preventleakage. Figure 23 shows theunit in the floor mountedposition.

- When the drain hose is placedin the room, insulate the hosewith foam polyethylene toavoid damage to the ceiling orfurniture.

- After completing installation ofrefrigerant lines, wiring anddrain connections, bind thetubing, wiring and drain hose(check if local codes permitbinding) into a bundle by usingtape at 100 or 200 mm (4" to8") intervals. Make sure thedrain hose is at the bottom ofthe bundle (Figure 24).

Figure 24

Figure 23

Drain hose

Indoor unit

SlantDrain hose

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Electrical Installation

All wiring and grounding mustcomply with local electrical codes.

1. WiringImportant Safeguards:- Check the unit nameplate

for electrical rating.Be sure wiring is doneaccording to local codesand wiring diagram.

- Use a separate power linewith circuit breaker for eachair conditioning unit.

- Connect electrical groundto all units.

- Wiring should not touchrefrigerant tubing,compressor, motors ormoving parts.

- The manufacturer willaccept no responsibility forproblems caused byunauthorized changes inthe internal wiring.

- Connect the wiring firmly.

2. Electrical ConnectionsSee Section: Wiring SystemDiagram

Indoor UnitRemove the right side panel andreturn grille (see previousinstructions), to access the terminalbase.- Pass the system wiring

through the PVC pipe (bothpower and control lines) tointerconnect indoor andoutdoor units.

- Connect the wire terminals tothe terminal base (seeconnection indication onsystem wiring diagram).

- Make sure all connections aretight.

Outdoor unitOutdoor Unit - Indoor Unit ElectricalInterconnection should be inaccordance with the applicablesystem wiring diagram and indoorunit diagrams.

Outdoor unit diagram are containedin the outdoor unit Installer Manual.

Note:- All wiring must comply with

national state and local codes.- After completing the

connections, re-confirm themto be in accordance with theunit and system wiringdiagrams.

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ECONOECONO

ONFAN

COOLDRYHEATAUTO

OFFPOWERCOOL

SWZZ

MODE

LOUVER

SWEEP

FRONTBLADELIGHT

OFF

ON POWERCOOL

ECONO

SLEEP

SEND

Locate and attach thewireless remote controland wired control asfollows:

1. Do not place the control andthe remote control near heatsources or expose to thedirect rays of the sun.

2. Do not expose the control tothe indoor unit’s supply airstream.

3. Do not place in a confinedspace.

4. Attach the remote controlholder as shown in Figure 25,26.

Remote Control Installation

Dimension

Wireless Remote Control Remote Control Mounting Bracket

Figure 25 Figure 26

TEMP

MENU

MODE

FAN

ON

ONOFF

OFFECONO

SW SLEEP ECONO TURBO

TURBO

AUTO

14.5

4.0 X 2SLOT

14.5

45.0

90.0

45.0

90.0

61.0

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Typical Wiring Diagram

J2

N C1 C2L

P20

J1P

17

P16

P19

P21FREEZE

P22P26

2

1

P3

LIN

E-C

EX

-HI

P7

P6

P5

P4

LOW

ME

D

HI

NE

UT

RA

L

P2

LIN

E

P1

BLK

BLU

RE

D

YL

BR

WW

HT

WHTGRN/YL

WH

T

RE

D

RE

D

BLK

BLU

RE

D

YL

INFRARED RECEIVER

GRN/YL

DESCRIPTION

COIL

BLK

RE

D

1. FREEZE SENSORLOCATED ONEVAPORATOR COIL

2. TEMPERATURESENSOR LOCATEDIN RETURN AIRSTREAM

SWEEP MOTOR(OPTION)

ROOM ST

EP

PE

R T

OP

ST

EP

PE

R F

RO

NT

DISPLAY

WIRELESS REMOTECONTROLLER

POWER SUPPLY220-240VAC/1PH/50Hz220-240VAC/1PH/60Hz

BLOWERMOTOR

WIRING TO GROUNDING SYSTEM

200-240 VAC CONTROLWIRING TO OUTDOOR UNIT

FIELD WIRING

FACTORY WIRING

JUNCTION

TERMINAL BOARD

CAPACITOR

FUSE 3 AMP.

COLOR CODE

BLU BLUEBLK BLACKRED REDWHT WHITEGRN GREENYL YELLOWBR BROWN

MCX512-536GB (50 Hz)

MCX512-536G1 (60 Hz)

INDOOR UNIT, COOLING ONLY WITH CONTROL TYPE “R”, 4 SPEED

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MCX042-060GB (50 Hz)

MCX042-060G1 (60 Hz)

INDOOR UNIT, COOLING ONLY WITH CONTROL TYPE “R”, 3 SPEED

2

1

GRN/YL

1. FREEZE SENSORLOCATED ONEVAPORATOR COIL

2. TEMPERATURESENSOR LOCATEDIN RETURN AIRSTREAM

P21FREEZE

P22P26

ROOM

DISPLAY

P3

LIN

E-C

P6

P5

P4

NE

UT

RA

L

P2

LIN

E

P1

LOW

ME

D

HI

WH

T

RE

D

RE

D

BLK

BLU

RE

D

INFRARED RECEIVER

P17

P16

BLK

RE

D

J2

J1

WHTGRN/YL

BLK

BLU

RE

D

BLOWERMOTOR

BR

WW

HT

WIRELESS REMOTECONTROLLER

POWER SUPPLY220-240VAC/1PH/50Hz220-240VAC/1PH/60Hz

WIRING TO GROUNDING SYSTEM

200-240 VAC CONTROLWIRING TO OUTDOOR UNIT

N C1 C2L

COLOR CODE

BLU BLUEBLK BLACKRED REDWHT WHITEGRN GREENYL YELLOWBR BROWN

DESCRIPTION

COIL

FIELD WIRING

FACTORY WIRING

JUNCTION

TERMINAL BOARD

CAPACITOR

FUSE 3 AMP.

Typical Wiring Diagram

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MCX512-536GB (50 Hz)

MCX512-536G1 (60 Hz)

INDOOR UNIT, COOLING ONLY WITH CONTROL TYPE “W”, 4 SPEED

GRN/YL

2

1 1. FREEZE SENSORLOCATED ONEVAPORATOR COIL

2. TEMPERATURESENSOR LOCATEDIN RETURN AIRSTREAM

SWEEP MOTOR(OPTION)

GRN/YL

ST

EP

PE

R T

OP

ST

EP

PE

R F

RO

NT

P20

P19

P21FREEZE

P22

ROOM

DISPLAY

P31

LIN

E-C

EX

-HI

LOW

ME

D

HI

NE

UT

RA

L

LIN

E

P3

P7

P6

P5

P4

P2P1

WH

T

RE

D

RE

D

BLK

BLU

RE

D

YL

P17

P16

BLK

RE

D

J2

J1

WIRE DISPLAY

BLK

BLU

RE

D

YL

WHT

BR

WW

HT

BLOWERMOTOR

N C1 C2L

POWER SUPPLY220-240VAC/1PH/50Hz220-240VAC/1PH/60Hz

WIRING TO GROUNDING SYSTEM

200-240 VAC CONTROLWIRING TO OUTDOOR UNIT

BLU BLUEBLK BLACKRED REDWHT WHITEGRN GREENYL YELLOWBR BROWN

COIL

FIELD WIRING

FACTORY WIRING

JUNCTION

TERMINAL BOARD

CAPACITOR

FUSE 3 AMP.

DESCRIPTION COLOR CODE

Typical Wiring Diagram

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MCX042-060GB (50 Hz)

MCX042-060G1 (60 Hz)

INDOOR UNIT, COOLING ONLY WITH CONTROL TYPE “W”, 3 SPEED

GRN/YL

P21FREEZE

P22

ROOM

DISPLAY

P31

J2

GRN/YL

2

1 1. FREEZE SENSORLOCATED ONEVAPORATOR COIL

2. TEMPERATURESENSOR LOCATEDIN RETURN AIRSTREAM

LIN

E-C

HI LO

W

ME

D

NE

UT

RA

L

LIN

E

WIRE DISPLAY P3

P6

P5

P4

P2P1

WH

T

RE

D

RE

D

BLK

BLU

RE

D

P17

P16

BLK

RE

D

J1

WHT

BR

WW

HT

BLK

BLU

RE

D

BLOWERMOTOR

BLU BLUEBLK BLACKRED REDWHT WHITEGRN GREENYL YELLOWBR BROWN

COIL

FIELD WIRING

FACTORY WIRING

JUNCTION

TERMINAL BOARD

CAPACITOR

FUSE 3 AMP.

N C1 C2L

POWER SUPPLY220-240VAC/1PH/50Hz220-240VAC/1PH/60Hz

200-240 VAC CONTROLWIRING TO OUTDOOR UNIT

COLOR CODEDESCRIPTION

WIRING TO GROUNDING SYSTEM

Typical Wiring Diagram

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Dimensional Data

OUTLINE DIMENSIONSMCX512-536GB (EXPORT 50 Hz)MCX512-536G1 (EXPORT 60 Hz)

MCX512GB/G1MCX518GB/G1

MCX524GB/G1

DIMENSIONAL DATA

MODELCONN. SIZES TYPE A B C

LIQUID SUCTION CONNECTIONS. IN. (MM.) IN. (MM.) EACH

1/4 (6.4) 1/2 (12.7) 42.28 (1074.0) 34.61 (879.0) 4FLARED

3/8 (9.5) 5/8 (15.9) 51.13 (1324.0) 44.45 (1129.0) 4FLARED

MCX530GB/G1 3/8 (9.5) 5/8 (15.9) 61.97 (1574.0) 54.29 (1379.0) 6FLARED

MCX536GB/G1 3/8 (9.5) 3/4 (19.0) 61.97 (1574.0) 54.29 (1379.0) 6FLARED

NOTE 1) SUCTION AND LIQUID LINES HAVE FLARE TYPE CONNECTIONS.2) DIMENSIONS : MILIMETERS [INCHES] 25.4 MM. = 1 IN.

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DIMENSIONAL DATA

NOTE 1) DIMENSIONS : MILIMETERS [INCHES] 25.4 MM. = 1 IN.

MODELCONN. SIZES

LIQUID SUCTION

TYPE

CONNECTIONS.

A B C D

IN. (MM.) IN. (MM.) EACH IN. (MM.)

MCX042GB/G1MCX048GB/G1

BRAZEDBRAZED

3/8 (9.5)3/8 (9.5)

7/8 (22.2)1-1/8 (28.6)

71.81 (1824.0) 64.13 (1629.0) 15.76 (400)8

MCX060GB/G1 BRAZED3/8 (9.5) 1-1/8 (28.6) 81.65 (2074.0) 73.98 (1879.0) 23.64 (600)8

OUTLINE DIMENSIONSMCX042-060GB (EXPORT 50 Hz)MCX042-060G1 (EXPORT 60 Hz)

Dimensional Data

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Notes

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Notes

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TraneA business of American Standard Companieswww.trane.com

For more information, contact your local district

office

Supersedes: Oct 2002

Stocking Location: Bangkok, Thailand

Trane has a policy of continuous product and product data improvement and reserves the right to

change design and specific ations without notice. Only qualified technicians should perform the installation

and servicing of equipment referred to in this publication.

Date: Jul 2007

Literature Order Number: MS-SVN015-EN

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